DD268422A1 - METHOD FOR PRODUCING STEEL FIBERS FOR HIGH-GRADE MAGNETIC FIELDS - Google Patents
METHOD FOR PRODUCING STEEL FIBERS FOR HIGH-GRADE MAGNETIC FIELDS Download PDFInfo
- Publication number
- DD268422A1 DD268422A1 DD88312292A DD31229288A DD268422A1 DD 268422 A1 DD268422 A1 DD 268422A1 DD 88312292 A DD88312292 A DD 88312292A DD 31229288 A DD31229288 A DD 31229288A DD 268422 A1 DD268422 A1 DD 268422A1
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- steel
- magnetic fields
- steel fibers
- fiber
- production
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
- B03C1/034—Component parts; Auxiliary operations characterised by the magnetic circuit characterised by the matrix elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
- B23P17/04—Metal-working operations, not covered by a single other subclass or another group in this subclass characterised by the nature of the material involved or the kind of product independently of its shape
- B23P17/06—Making steel wool or the like
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
- C22C33/0285—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5% with Cr, Co, or Ni having a minimum content higher than 5%
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Fibers (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung von Stahlfasern, die als Matrixmaterial fuer Hochgradient-Magnetfelder, insbesondere fuer das Abscheiden von fein- bzw. feinstkoernigen Stoffen mit schwachparamagnetischen Eigenschaften, Verwendung finden. Das erfindungsgemaesse Verfahren ist so ausgestaltet, dass ein Bandstahl aus ferritischem, korrosionsbestaendigem Chromstahl, in der Zusammensetzung von 0,08-0,1% C, 16-18% Cr, Ti 0,01% sowie einer Haerte HV 30 von 185-200 kp/mm2 und einer Bruchdehnung von 26-28%, mit einer Schnittgeschwindigkeit von 15-18 m/min und einem Vorschug von 0,03-0,1 mm/Umdrehung abgearbeitet wird. Eine weitere Kennzeichnung der Loesung ist, dass der Werkzeugschnittwinkel in einem Bereich von 75-82 gehalten wird. Fig. 2The invention relates to a process for the production of steel fibers, which are used as matrix material for high-gradient magnetic fields, in particular for the deposition of fine or feinstkoernigen substances with weak paramagnetic properties. The inventive method is designed so that a steel strip of ferritic, corrosion-resistant chromium steel, in the composition of 0.08-0.1% C, 16-18% Cr, Ti 0.01% and a Haerte HV 30 of 185-200 kp / mm2 and an elongation at break of 26-28%, with a cutting speed of 15-18 m / min and a Vorschug of 0.03-0.1 mm / turn is processed. Another identification of the solution is that the tool cutting angle is kept within a range of 75-82. Fig. 2
Description
Hierzu 1 Seite ZeichnungenFor this 1 page drawings
Die Erfindung betrifft ein Verfahren zur Herstellung von Stahlfasern, die als Matrixmaterial für die Erzeugung von Hochgradient-Mi gnetfeldern, insbesondere für das Abschneiden von fein- bzw. feinstkörnigen Stoffen mit schwachparamagnetischen Eigenschaften, Verwenduno finden.The invention relates to a process for the production of steel fibers, the gnetfeldern as a matrix material for the production of Hochgradient-Mi, in particular for the cutting of fine or fine-grained materials with weak paramagnetic properties, nutzuno find.
Als eigentliche magnetisch aktive Substanz wird im Arbeitsraum von Hochgradient-Magnetscheidem ein Matrixmaterial eingesetzt, an dem sich durch die im Magnetfeld entstehenden Effekte die Anlagerung der abzuscheidenden ferro- bzw. paramagnetischen Teilchen vollzieht. Das Ziel der bekannten Verfahren zur Herstellung von Stahlfasern ist es, die als Matrixmaterial eingesetzten Stahlfasern so auszubilden, daß eine Diskontinuität der Faseroberfläche, und zwar eine vergrößerte, in sich strukturierte und somit hoch wirksame Anlagerungsfläche, die entscheidend für die Eignung einer Matrix zur Fixierung magnetisierbarer Partikel ist, entsteht. Die Beschaffenheit der Einzelfaser hinsichtlich ihrer Ausbildung und Dimension, wie Faserbreite, Faserhöhe, Grate und Standschupponbreite und -tiefe, wird im entscheidenden Maße vom Fertigungsprozeß beeinflußt.As the actual magnetically active substance, a matrix material is used in the working space of high-gradient magnetic separators, at which the accumulation of the ferro- or paramagnetic particles to be separated takes place due to the effects arising in the magnetic field. The aim of the known processes for the production of steel fibers is to form the steel fibers used as matrix material so that a discontinuity of the fiber surface, namely an enlarged, self-structured and thus highly effective deposition surface, which is crucial for the suitability of a matrix for fixation magnetizable Particles is created. The nature of the individual fiber in terms of their design and dimension, such as fiber width, fiber height, burrs and Schupponbreite and depth is influenced to a significant extent by the manufacturing process.
Aus den Untersuchungen bekannter als Matrixmaterial verwendeter Stahlfasern konnte ermittelt werden, daß die derzeitigen Herstellungsverfahren nicht in der Lage sind, ein» optimale Oberflächenstruktur der Stahlfaser zu erzeugen, und somit kann die eingesetzte Stahlfaser nicht mnximal für den Effekt der magnetischen Anlagerung genutzt werden.From the researches of known steel fibers used as the matrix material, it has been found that the present production methods are incapable of producing an optimum surface structure of the steel fiber, and thus the steel fiber used can not be used for the effect of magnetic attachment.
Besonders bei der HGM-Scheidung im Feinstkornbereich <2m ist entsprechend den ermittelten und bekannten Berechnungen zwischen Korndurchmesser des zu schneidenden Rohstoffes mit dem für einen erfolgreichen Scheidungseffekt erforcerlichen Matrixfaserdurchmesser eine feine Faser erforderlich. Die Herstellung der Faser kann dabei nach einem spanabhebenden Verfahren als auch nach einem Verfahren der Bündelziehtechnologie erfolgen. Jedoch muß festgestellt werden, daß— resultierend aus den Untersuchungen über die Oberflächenstruktur herkömmlich hergestellter Stahlfaser und ihr Vermögen, durch magnetische Gradientenbildung feinkörnige paramagnotische Partikel einzufangen — die Faserausbildung unzureichend ist.Especially with the HGM divorce in Feinstkornbereich <2m a fine fiber is required in accordance with the calculated and known calculations between grain diameter of the raw material to be cut with the matrix fiber diameter necessary for a successful divorce effect. The production of the fiber can be carried out by a cutting process as well as by a method of bundle drawing technology. However, it has to be noted that as a result of studies on the surface structure of conventionally produced steel fiber and its ability to trap fine-grained paramagnetic particles by magnetic gradient formation, fiber formation is insufficient.
optimieren, daß die Stahlfaserausbildung wesentlich verbessert wird.optimize that the steel fiber formation is significantly improved.
der Zusammensetzung von 0,08-0,1 % C, 16-18% Cr, Ti <0,01 % sowie einer! !arte HV30 von 185-200kp/mm2 und einerthe composition of 0.08-0.1% C, 16-18% Cr, Ti <0.01% and a! ! arte HV30 from 185-200kp / mm 2 and one
einem Bereich von 75-82°.a range of 75-82 °.
werden.become.
abgearbeitet, durch den in Drehrichtung des Bundes folgenden, jedoch auf der Schneidfläche glatten Drehmeißel 5 die geriffelteprocessed by the following in the direction of rotation of the Federal, but on the cutting surface smooth turning tool 5 the corrugated
(Matrix B). Die verfahrenstechnischen Randbedingungen, wie magnetische Feldstärke, Suspensions-Fließgeschwindigkeit,(Matrix B). The procedural boundary conditions, such as magnetic field strength, suspension flow rate,
im Vergleich der Durchschnittsgehalte mehrerer Versuche sowie des mit dem Magnetprodukt ausgeschiedenen Anteils desin comparison of the average contents of several experiments as well as that of the magnetic product excreted
gereinigten Suspension bereits Verbesserungen um Zehntel % eine bedeutende Qualitätssteigerung der behandelten Produkte bewirken.purified suspension even improvements by tenths of a percent bring about a significant increase in the quality of the treated products.
Aus der tabellarischen Übersicht ist die vorteilhaftere Wirkung der erfindungsgemäß hergestellten Stahlfaser ersichtlich. Mikroskopische Untersuchungen an den erfindungsgemäß hergestellten Stahlfasern zeigen, daß die Verbesserung auf die besondere Oberflächenstruktur der Fasern zurückzuführen ist.The tabular overview shows the more advantageous effect of the steel fiber produced according to the invention. Microscopic investigations on the steel fibers produced according to the invention show that the improvement is due to the special surface structure of the fibers.
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD88312292A DD268422B3 (en) | 1988-01-19 | 1988-01-19 | METHOD FOR PRODUCING STEEL FIBERS FOR HIGH-GRADE MAGNETIC FIELDS |
DE3826480A DE3826480A1 (en) | 1988-01-19 | 1988-08-04 | Process for producing steel filaments for high-gradient magnetic fields |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD88312292A DD268422B3 (en) | 1988-01-19 | 1988-01-19 | METHOD FOR PRODUCING STEEL FIBERS FOR HIGH-GRADE MAGNETIC FIELDS |
Publications (2)
Publication Number | Publication Date |
---|---|
DD268422A1 true DD268422A1 (en) | 1989-05-31 |
DD268422B3 DD268422B3 (en) | 1991-10-02 |
Family
ID=5596590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD88312292A DD268422B3 (en) | 1988-01-19 | 1988-01-19 | METHOD FOR PRODUCING STEEL FIBERS FOR HIGH-GRADE MAGNETIC FIELDS |
Country Status (2)
Country | Link |
---|---|
DD (1) | DD268422B3 (en) |
DE (1) | DE3826480A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04505820A (en) * | 1989-12-20 | 1992-10-08 | アクトロン エントヴィックルングス アーゲー | Deactivation resonant label |
US6180005B1 (en) | 1999-02-18 | 2001-01-30 | Aquafine Corporation | Continuous filament matrix for magnetic separator |
DE102004038331A1 (en) | 2004-08-06 | 2006-03-16 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Metallic fibers, their production and applications |
CN111715402B (en) * | 2019-08-05 | 2022-09-16 | 潍坊奇为新材料科技有限公司 | Non-blocking and easy-to-wash non-metallic ore sorting device |
-
1988
- 1988-01-19 DD DD88312292A patent/DD268422B3/en not_active IP Right Cessation
- 1988-08-04 DE DE3826480A patent/DE3826480A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE3826480A1 (en) | 1989-07-27 |
DD268422B3 (en) | 1991-10-02 |
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